public long GetDatabaseTransactionVersionSizeInBytes()
{
try
{
const string categoryName = "Database ==> Instances";
if (PerformanceCounterCategory.Exists(categoryName) == false)
{
return(-1);
}
var category = new PerformanceCounterCategory(categoryName);
var instances = category.GetInstanceNames();
var ravenInstance = instances.FirstOrDefault(x => x.StartsWith(uniqueRrefix));
const string counterName = "Version Buckets Allocated";
if (ravenInstance == null || !category.CounterExists(counterName))
{
return(-2);
}
using (var counter = new PerformanceCounter(categoryName, counterName, ravenInstance, readOnly: true))
{
var value = counter.NextValue();
return((long)(value * TransactionalStorageConfigurator.GetVersionPageSize()));
}
}
catch (Exception e)
{
if (reportedGetDatabaseTransactionCacheSizeInBytesError == false)
{
reportedGetDatabaseTransactionCacheSizeInBytesError = true;
log.WarnException("Failed to get Version Buckets Allocated value, this error will only be reported once.", e);
}
return(-3);
}
}
